arch/nios2/include/asm/cpuinfo.h

   1 /*
   2  * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 #ifndef _ASM_NIOS2_CPUINFO_H
  20 #define _ASM_NIOS2_CPUINFO_H
  21
  22 #include <linux/types.h>
  23
  24 struct cpuinfo {
  25         /* Core CPU configuration */
  26         char cpu_impl[12];
  27         u32 cpu_clock_freq;
  28         bool mmu;
  29         bool has_div;
  30         bool has_mul;
  31         bool has_mulx;
  32         bool has_bmx;
  33         bool has_cdx;
  34
  35         /* CPU caches */
  36         u32 icache_line_size;
  37         u32 icache_size;
  38         u32 dcache_line_size;
  39         u32 dcache_size;
  40
  41         /* TLB */
  42         u32 tlb_pid_num_bits;   /* number of bits used for the PID in TLBMISC */
  43         u32 tlb_num_ways;
  44         u32 tlb_num_ways_log2;
  45         u32 tlb_num_entries;
  46         u32 tlb_num_lines;
  47         u32 tlb_ptr_sz;
  48
  49         /* Addresses */
  50         u32 reset_addr;
  51         u32 exception_addr;
  52         u32 fast_tlb_miss_exc_addr;
  53 };
  54
  55 extern struct cpuinfo cpuinfo;
  56
  57 extern void setup_cpuinfo(void);
  58
  59 #endif /* _ASM_NIOS2_CPUINFO_H */